MEA吸收烟气中二氧化碳过程的建模和分析.pdfVIP

MEA 吸收烟气中二氧化碳过程的建模与分析 王致新，吕剑虹，崔晓波 东南大学，能源与环境学院，南京市四牌楼2 号 邮编210096 ； Modeling and Analysis of MEA-based Carbon Dioxide Capture System from Flue Gas Zhixin Wang, Jianhong Lu, Xiaobo Cui School of Energy Environment, Southeast University, Sipailou No.2 Nanj ing, China. ABSTRACT: In this work a rate-based steady-state model 减少二氧化碳净排放量，然而由于化石燃料的实 of an integrated MEA-based carbon dioxide capture system 用性和高能量密度，化石燃料在今后的几十年内 from flue gas, consisting of an absorber and stripper, is developed using the widely-accepted commercial 仍将继续作为世界能源的最主要来源。在过去的 platform-Aspen Plus. The rate-based model has better 十年里，燃煤发电满足了新增电力需求的47%， predictive capability than the equilibrium-based model, and agrees well with experimental data from the pilot plant at 它同时也是二氧化碳排放的单个最大来源，而 the University of Texas at Austin. Based on this steady-state 且，在今后几十年内仍然是全球发电的支柱。因 model, comprehensive flowsheet parametric studies have been done to investigate the integrated system 此，目前中国、印度等发展中国家在建的新燃煤 characteristics. The sensitivity simulation analysis results 发电厂和欧美以及其他国家现有的燃煤发电厂 show that, specifying a constant condenser temperature 对未来几十年的全球二氧化碳减排任务提出了 makes the system less sensitive than operating the stripper at a constant distillate to feed ratio and a constant reflux [1] 巨大的挑战 。 ratio. The enhanced control structure is used to analyze the 目前，为了降低来自化石燃料的二氧化碳排 steady state characteristics of the carbon dioxide capture process. No snowball effect is seen with this improved 放，主要有三大类型的减排方法：燃烧前捕捉、 control structure on integrated system